of the plastic strip adheres firmly to the base material. The welder should be held at an angle of about
800, and some pressure by hand should be applied to hold the top of the strip down.
3. Guide the strip by hand and continue the weld at sufficient speed. Flow lines should form on both sides
of the strip. If the proper speed is not maintained, the strip will soften and stretch because of excessive
heat. This condition can he corrected by a quick tamping motion with the shoe, as used to start the weld.
Proceed then in the direction of the weld.